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Finding the Fourth Proportional to 858,682.80, 1,288,024.20 and 606,740.40

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Solution

The fourth proportional to 858,682.80, 1,288,024.20 and 606,740.40 is: 910,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,682.80 : 1,288,024.20 = 606,740.40 : x
  2. Step 2: Convert to fraction form
    858,682.80/1,288,024.20 = 606,740.40/x
  3. Step 3: Cross multiply
    858,682.80x = 1,288,024.20 × 606,740.40
  4. Step 4: Simplify right side
    858,682.80x = 781,496,318,317.68
  5. Step 5: Solve for x
    x = 781,496,318,317.68/858,682.80
  6. Step 6: Final answer
    x = 910,110.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.